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Re: bought a used 48" X 48" X 5" used router table

i pulled one of the servos (from on the gantry itself) to take a few measurements.
the mount holes are 47mm centers, and the shaft has a 6.32mm diameter, and 6mm at the flat.

what pictures or measurements can i take to help get the specs of these servos?
I have some Gecko G320 drivers in my ebay watch-list, and i can get them via PayPal Credit. but i want to make absolutely sure they will work, and that i know how to hook them up before i spend credit.

now, regarding the spindle. all the VFDs i found require 220/240Vac, at about 18 - 20A. that is a bit more than the current service to my "CNC trailer" (old camper, in process of conversion) can handle. actually, it is the whole of the service to the trailer (L14-20 connection). if i buy/make a mount for my Makita RF1101 router, other than feed rate, what compromises would i have to make to downgrade the router? (the 5HP spindle may be up for sale... )

there is a remote possibility of upgrading the trailer power to 220V/50A service, but that would require a lot more money.

Re: bought a used 48" X 48" X 5" used router table

I'm running a Porter Cable 7518 router motor on my 4x8. Like you, I don't have enough power in my shop to run the original 10 HP spindle. The only real difference is you just have to cut a bit slower. Other than that it works just fine.

Regarding your servos, some good pictures would help. If you have a local motor shop maybe a trip over to them would be in order. They may be able to identify the motor, and should be able to figure out the voltage, most of them are rated at 140V, but I have seen them rated at 320V. Some of the newer ones are rated at 80V. The RPM is dependant on voltage, the torque is roughly dependent on the current. A call to the router manufacturer, if they are still around, might be helpful.

I have brushed DC servos on my mill, they are rated at 140V, they were originally running on 100V, and I am now running them on 75V and they are working just fine, I don't need 400 IPM rapids, 150 IPM is just fine. I checked the voltage to them at 100 IPM and they were only being fed 37 volts to run at that speed.

Re: bought a used 48" X 48" X 5" used router table

out of curiosity, i happened to find steppers with the correct mount, and shaft size, and 400oz/in (2.83Nm) holding torque. would those be a working fall-back, if the servos don't pan out? (also, i kinda like the sound of the steppers working...)